Pathological Q wave as an indicator of left ventricular ejection fraction in acute myocardial infarction

  • Muhammad S. Tiyantara Faculty of Medicine, Universitas Mulawarman, Samarinda
  • Muhammad Furqon Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Mulawarman, Samarinda
  • Swandari Paramita Laboratory of Public Health, Faculty of Medicine, Universitas Mulawaman, Samarinda
DOI: https://doi.org/10.13181/mji.v25i2.1274
Keywords: LVEF, non-Q-wave myocardial infarction, pathological Q wave, Q-wave myocardial infarction
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Abstract

Background: Q-wave myocardial infarction (QMI) has higher mortality and lower myocardial viability than non-Q-wave myocardial infarction (NQMI), suggesting the existence of pathological Q waves reflects the worse ventricular function. The aim of the study is to determine difference in left ventricular ejection fraction (LVEF) between QMI and NQMI.

Methods: The study design was cross-sectional analysis conducted in patients with AMI that were hospitalized and undergone echocardiography in Abdul Wahab Sjahranie County General Hospital Samarinda during February 2014 to March 2015. Standard 12-lead electrocardiograms (ECG) were recorded at presentation, 1 day and 2 days after the onset of AMI as well as using the classical criteria for pathological Q wave. LVEF assessment was performed using echocardiography after the second day since the onset of AMI. Independent-T test was used to determine difference in LVEF using PSPPIRE 0.8.4.

Results: There were 34 subjects comprising 16 QMI patients and 18 NQMI patients. QMI had a lower LVEF (42±13%) compared to NQMI (60±11%, p<0.001). The presence of pathological Q waves was associated with LVEF ≤40% (p=0.002).

Conclusion: QMI had a lower LVEF than NQMI, provides information about the role of pathological Q wave as an indicator of LVEF.

Author Biographies

Muhammad S. Tiyantara, Faculty of Medicine, Universitas Mulawarman, Samarinda
Medical Student, Faculty of Medicine, Universitas Mulawarman, Samarinda, Indonesia
Muhammad Furqon, Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Mulawarman, Samarinda
Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Mulawarman, Samarinda, Indonesia
Swandari Paramita, Laboratory of Public Health, Faculty of Medicine, Universitas Mulawaman, Samarinda
Laboratory of Public Health, Faculty of Medicine, Universitas Mulawaman, Samarinda, Indonesia

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Published
2016-07-26
How to Cite
1.
Tiyantara MS, Furqon M, Paramita S. Pathological Q wave as an indicator of left ventricular ejection fraction in acute myocardial infarction. Med J Indones [Internet]. 2016Jul.26 [cited 2024Apr.25];25(2):98-103. Available from: http://mji.ui.ac.id/journal/index.php/mji/article/view/1274
Issue
Vol. 25 No. 2 (2016): June
Section
Clinical Research

Copyright (c) 2016 Muhammad S. Tiyantara, Muhammad Furqon, Swandari Paramita

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